cameras are after the event but we need that kind of technology pro-active. the other key is not sit back and say we have to scrap what we had so far. if you take a look at all the events, newtown, fertilizer plant explosion in texas and this event, you have a capability among the first responders you haven't had before. that is what i refer to a homeland security dividend. we can build on that, better communications, working with public. >> heather: the lessons that were learned following the september 11th, 2001 attacks, first major event that has happened on u.s. soil since then. talk a little more about the lessons that have been learned that allowed boston to react the way they did. i know that boston had two citywide practice type runs prior to this. >> it's all about command and control, training, equipment and being able to give mutual aid and working together. you saw great combination of state and local lawmakers working together. >> heather: in new york city we have approximately 3,000 cameras we are able to monitor different areas. with those came